Patent GB-191011017-A (GB)
Title: Improvements in Means for Regulating the Feed to Refuse Destructor and other Furnaces.
Inventor: LEASK HENRY NORMAN
IPC: F23G5/44
Filed: 1910-05-04
Granted: 1911-05-04
Abstract: 11,017. Leask, H. N. May 4. Skips.-In apparatus for feeamg refuse or other material to refusedestructor or other furnaces of the kind comprising a stationary or removable hopper, container or skip arranged above the furnace and provided with a door or doors at the bottom adapted to close the bottom of the hopper and the furnace opening, means are provided operated by the opening or closing of the doors between the hopper &c. and the furnace, or by other means, and consisting of spears or forks, plates, or arms or the like adapted to be inserted wholly or partly into or across the hopper &c. to hold up a part of the charge and allow only that part of the charge below the spears or forks &c. to drop into the furnace. In the arrangement shown in Fig. 1, the furnace door A is independent of the container door B and runs on rails a<1> adapted to raise the door when it is moved from its closed position by a chain or other means. Lugs a<2> on the door A engage a lug b<1> on the door B, which also runs on rails, and effect its removal or closure. During the opening of the door A, its upper surface engages with a runner d' on one end of a lever D mounted on the container C and forces the prongs or spears E, pivoted to the slotted end of the lever D and working in guides F, into the container. The door A carries a rail a<3> bv which the runner d' is held up when the door A is removed from under it. A lug a<4> on the door A engages with the runner d<1> after the door B has been closed, and at the close of the return travel of the door A effects the withdrawal of the spears E so as to allow the material to drop on to the door B. In the modification shown in Fig. 2, the furnace door A and container door B are moved together by an hydraulic ram or other means. The lever D is operated by a cam-surface G and a lug g carried by the door B. Two spears or sets of spears are employed connected by a link H. An arrangement is shown in Fig. 4 in which the container is provided with upper and lower sets of spears E adapted to divide the contents of the container into three parts to be fed to the furnace at different times. Any number of sets of spears may be similarly arranged. The spears may be operated by the doors or by independent means such as counterweights J mounted on levers D and adapted when free to force the spears into the container. Chains K serve to lift the weights and withdraw the spears. In a further modification, the spears are adapted to be inserted or withdrawn by screw gearing. In the application of the invention to movable containers, holes m, Fig. 7, are provided in the side of the container M adapted to receive the spears E, which are mounted upon an arm D supported by the framing of the apparatus and operated by a weight and chain. Fig. 9 shows a movable skip M in which the charge is divided by pivoted plates or arms N, and the weight of the skip and contents is employed to operate the plates or arms. The skip is lowered upon links R on one or both sides of the container, the links being connected by levers r to weighted quadrants Q, which are forced inwards through slots in the container to raise the pivoted arms or plates N. The quadrants Q may be arranged to be operated in any of the ways described above with reference to the spears. Pivoted fingers carried on shafts outside of a fixed container and operated by screw-gear or pivoted plates carried upon shafts or pivots operated by weights may be employed for dividing the charge.